﻿$(function(){
	/*返回顶部插件*/
	var $backToTopTxt = "返回顶部", $backToTopEle = $('<div class="backToTop hh hand"></div>').appendTo($("body"))
		.text($backToTopTxt).attr("title", $backToTopTxt).click(function () {
			$("html, body").animate({ scrollTop: 0 }, 120);
		}), $backToTopFun = function () {
			var st = $(document).scrollTop(), winh = $(window).height();
			(st > 0) ? $backToTopEle.show() : $backToTopEle.hide();
			//IE6下的定位
			if (!window.XMLHttpRequest) {
				$backToTopEle.css("top", st + winh - 166);
			}
		};
	$(window).bind("scroll", $backToTopFun);
	$(function () { $backToTopFun(); });
	/*返回顶部插件*/
});
